851112 divided by 7 
The aim is to understand the frequency of 7 in 851112.

Step 1:
If we divide 8 by 7, we get 1 and a remainder of 1.
Use 1 as the next digit of our solution. 
Result so far: 1.0
The remainder is 1 after subtracting 7 from 8.
Bring next digit (5) of the dividend behind the 1 and repeat the process: 15 / 7

Let's proceed to step 2:
The number 7 fits into 15 2 times, leaving a remainder of 1.
The number 2 becomes the next digit in our result. 
Result so far: 12.0
The remainder is 1 after subtracting 14 from 15.
Bring next digit (1) of the dividend behind the 1 and repeat the process: 11 / 7

Advancing to step 3:
7 goes into 11 1 times with a remainder of 4.
Put 1 as the next digit of the answer. 
Result so far: 121.0
Deduct 7 from 11 and we're left with 4.
Grab the next digit (1) from the dividend, add it to 4, then carry on: 41 / 7

Let's proceed to step 4:
When dividing 41 by 7, we get 5 with a remainder of 6.
Record the quotient 5 as the next digit in the result. 
Result so far: 1215.0
If we take 35 away from 41, we end up with 6.
Take the next digit (1) from the dividend and append it to 6, then repeat: 61 / 7

On to step 5:
The number 7 fits into 61 8 times, leaving a remainder of 5.
The number 8 becomes the next digit in our result. 
Result so far: 12158.0
If we subtract 56 from 61, we get 5.
Fetch the next digit (2) from the dividend, attach it to 5 and continue: 52 / 7

Let's proceed to step 6:
7 can be fit into 52 7 times, resulting in a remainder of 3.
The number 7 becomes the next digit in our result. 
Result so far: 121587.0
If we subtract 49 from 52, we get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

On to step 7:
The number 7 fits into 30 4 times, leaving a remainder of 2.
The number 4 becomes the next digit in our result. 
Result so far: 121587.4
If we take 28 away from 30, we end up with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Moving on to step 8:
7 can be fit into 20 2 times, resulting in a remainder of 6.
The next digit of our result is 2. 
Result so far: 121587.42
If we take 14 away from 20, we end up with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Going ahead to step 9:
When dividing 60 by 7, we get 8 with a remainder of 4.
The number 8 becomes the next digit in our result. 
Result so far: 121587.428
Subtracting 56 from 60 leaves us with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Step 10:
When dividing 40 by 7, we get 5 with a remainder of 5.
Record the quotient 5 as the next digit in the result. 
Result so far: 121587.4285
Subtracting 35 from 40 leaves us with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Moving on to step 11:
7 can be fit into 50 7 times, resulting in a remainder of 1.
Put 7 as the next digit of the answer. 
Result so far: 121587.42857
If we take 49 away from 50, we end up with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

On to step 12:
7 goes into 10 1 times with a remainder of 3.
The next digit of our result is 1. 
Result so far: 121587.428571
Subtracting 7 from 10 leaves us with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Let's proceed to step 13:
When dividing 30 by 7, we get 4 with a remainder of 2.
Write down 4 as next digit of the result. 
Result so far: 121587.4285714
Subtracting 28 from 30 leaves us with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Moving on to step 14:
The number 7 fits into 20 2 times, leaving a remainder of 6.
Write down 2 as next digit of the result. 
Result so far: 121587.42857142
Subtract 14 from 20 to get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

The final outcome is 121587.42857142, with a leftover of 6e-09.